Siemens 8WD4420-5AD Sirius Continuous Light Element

Siemens SIRIUS 8WD4420-5AD is a continuous light element with an integrated LED, yellow, 24 V AC/DC, designed for signaling columns in industrial control environments. This 70 mm‑diameter unit from the SIRIUS 8WD4 family provides a constant amber‑yellow signal from a 24 V AC/DC supply (tolerance ±10%), drawing up to 35 mA. The LED has a nominal life of 100,000 hours and produces a light intensity of 1.18 cd, with a typical range of 0.81–1.65 cd. The housing is PC, color yellow, and it uses a bayonet fastening for quick installation. It is IP65‑rated, offering protection against dust and water jets, and it operates in ambient temperatures from -20 to +50 °C. The unit measures about 65.5 mm in height and 70 mm in width/outer diameter, suitable for use in signaling columns to indicate machine status, process alerts, or other visual indications in control panels and industrial applications.